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#7136861 - 04/09/18 04:47 PM Looking to build a 300AAC blk out pistol
Bow hunter 91 Offline
Light Foot

Registered: 05/05/15
Posts: 11
Looking to build a 300 blk out ar15 pistol to use with a suppressor. I am thinking about a 10.5" barrel with pistol length gas. Looking for advice on complete uppers, and tips if I decide to build. How important is adjustable gas block for a suppressed ar? Recommendation on barrel length/metallurgy.

I am going to mainly use it as a sporting rifle and short(under 100 yards) distance hog hunting.

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#7137613 - 04/10/18 12:12 PM Re: Looking to build a 300AAC blk out pistol [Re: Bow hunter 91]
Crews Offline
Tracker

Registered: 07/03/10
Posts: 862
Loc: Houston, Tx
I have a complete upper purchased from Aero Precision, with a 8.5" barrel. I like the large diameter (on a short rifle) and the way it interfaces with the receiver and barrel nut. Very simple and rigid. It's big enough to not have any worries about mounting clearances if you're hanging stuff off the end of the rail with the can tucked in a little bit. Important with limited real estate.

I would strongly recommend an AGB. They've got way more gas than they need to reliably cycle supersonic loads with a suppressor. Tuning for your loads makes a big difference.

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#7137692 - 04/10/18 02:23 PM Re: Looking to build a 300AAC blk out pistol [Re: Bow hunter 91]
ChadTRG42 Offline
THF Celebrity

Registered: 09/16/09
Posts: 12499
Loc: Lewisville, TX
I just bought a 10.5" 300 blk out pistol to use. I'll be putting it through it's paces really soon at the range.
_________________________

Custom and Precision Ammunition!!
www.DallasReloads.com
Type 01 and Type 06 FFL

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#7137709 - 04/10/18 02:41 PM Re: Looking to build a 300AAC blk out pistol [Re: Bow hunter 91]
DocHorton Online   content
Extreme Tracker

Registered: 12/06/10
Posts: 4918
Loc: DFW
Just buy a PSA or Radical complete upper and be done with it, probably be under $300.

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#7137797 - 04/10/18 04:45 PM Re: Looking to build a 300AAC blk out pistol [Re: Bow hunter 91]
ImTheReasonDovesMourn Offline
Pro Tracker

Registered: 08/04/12
Posts: 1860
Loc: Greenville, TX
My favorite is a PSA 10.5". It's all factory except for the trigger, and it shoots cheap factory Remington UMC supers and subs great. I probably have $450 in it without the trigger, light and optics.

_________________________
Originally Posted By: KRoyal
Haha yea I polished that thing for hours.

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#7138378 - 04/11/18 11:45 AM Re: Looking to build a 300AAC blk out pistol [Re: Bow hunter 91]
huntandfish Offline
Pro Tracker

Registered: 11/29/07
Posts: 1706
Loc: Seclusion, tx
If you want to shoot subs also dont think adjustable gas block will work, of course if you leave it all the way open, but then again, why have one.

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#7138448 - 04/11/18 01:45 PM Re: Looking to build a 300AAC blk out pistol [Re: ChadTRG42]
Bow hunter 91 Offline
Light Foot

Registered: 05/05/15
Posts: 11
Originally Posted By: ChadTRG42
I just bought a 10.5" 300 blk out pistol to use. I'll be putting it through it's paces really soon at the range.


Please let me know what you find out.

Thanks

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#7138451 - 04/11/18 01:47 PM Re: Looking to build a 300AAC blk out pistol [Re: ImTheReasonDovesMourn]
Bow hunter 91 Offline
Light Foot

Registered: 05/05/15
Posts: 11
Originally Posted By: ImTheReasonDovesMourn
My favorite is a PSA 10.5". It's all factory except for the trigger, and it shoots cheap factory Remington UMC supers and subs great. I probably have $450 in it without the trigger, light and optics.




I have seen that exact upper set up on PSA for a very reasonable price. But doesn't that handguard create issues for a suppressor to be added?

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#7138452 - 04/11/18 01:48 PM Re: Looking to build a 300AAC blk out pistol [Re: huntandfish]
Bow hunter 91 Offline
Light Foot

Registered: 05/05/15
Posts: 11
Originally Posted By: huntandfish
If you want to shoot subs also dont think adjustable gas block will work, of course if you leave it all the way open, but then again, why have one.


I am building the pistol for subsonic only. I have plenty of ARs and don't need another gun to shoot supersonic with. Any suggestions on gas block set up for subsonic suppressed?

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#7138460 - 04/11/18 01:58 PM Re: Looking to build a 300AAC blk out pistol [Re: Bow hunter 91]
ChadTRG42 Offline
THF Celebrity

Registered: 09/16/09
Posts: 12499
Loc: Lewisville, TX
Originally Posted By: Bow hunter 91
Any suggestions on gas block set up for subsonic suppressed?


Yes. A standard gas block will do fine. If you go adjustable, open it up all the way.
_________________________

Custom and Precision Ammunition!!
www.DallasReloads.com
Type 01 and Type 06 FFL

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#7138509 - 04/11/18 03:00 PM Re: Looking to build a 300AAC blk out pistol [Re: Bow hunter 91]
KRoyal Online   sleepy
Dammit Kyle

Registered: 01/24/07
Posts: 15355
Loc: Sherman/North of Dallas
Also just FYI if you're planning on SBRing it don't run the LWRC Micro Stock, awesome stock but takes a proprietary spring and buffer which do not cycle subs.
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